82209975 has 12 divisors (see below), whose sum is σ = 135920616. Its totient is φ = 43845280.

The previous prime is 82209973. The next prime is 82209989. The reversal of 82209975 is 57990228.

It is not a de Polignac number, because 82209975 - 2¹ = 82209973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82209971) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 547992 + ... + 548141.

It is an arithmetic number, because the mean of its divisors is an integer number (11326718).

Almost surely, 2^82209975 is an apocalyptic number.

82209975 is a deficient number, since it is larger than the sum of its proper divisors (53710641).

82209975 is a wasteful number, since it uses less digits than its factorization.

82209975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1096146 (or 1096141 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 82209975 is about 9066.9716554095. The cubic root of 82209975 is about 434.8186587246.

The spelling of 82209975 in words is "eighty-two million, two hundred nine thousand, nine hundred seventy-five".